Note 7 - Income Taxes (Details) - Deferred Income Taxes (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Deferred tax assets:
Net operating loss carryforwards	$ 11,551	$ 12,074
Inventory	1,866	1,856
Other liabilities	3,195	3,051
Fixed assets	2,274	2,069
Other temporary differences	845	751
	19,731	19,801
Less: valuation allowance	(19,655)	(19,745)
Total deferred tax assets	76	56
Deferred tax liability:
Intangibles	(2,019)	(1,453)
Other temporary differences	97	(13)
Net deferred tax liability	(1,846)	(1,410)
As reported:
Non-current deferred tax assets	76	56
Current deferred tax liability	(296)	(271)
Non-current deferred tax liability	$ (1,626)	$ (1,195)